C / C++ / MFC Discussion Boards

hanno2528-Jan-06 5:37

28-Jan-06 5:37

Hi!

I try to fill a CListBox with elements of a CList object. The elements should be listed, as soon as the dialog will be opened. So, I have to do this via "OnInitDialog". But to get access to the list elements, OnINitDialog needs one parameter in his parameterlist.
Does somebody know, how I can overwrite this function?

Thanks a lot, hanno Smile | :)

Re: Loading list elements in a CListBox

Owner drawn29-Jan-06 18:04

Owner drawn

29-Jan-06 18:04

If you overload OnInitDialog it won't be called. OnInitDialog must have the exact signature then only it's going to be called. You can do this write a new function called Init(...) with your parameter and call this function from OnInitDialog.

Jesus Loves Rose | [Rose]

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--Owner Drawn Rose | [Rose]

--Defeat is temporary but surrender is permanent
--Jesus is Lord Rose | [Rose]

What's wrong with my map engine?

Lord Kixdemp28-Jan-06 4:35

Lord Kixdemp

28-Jan-06 4:35

Hello everyone! Big Grin | :-D

OK, I posted a question 1 or 2 days ago about this... I already solved that problem, but now I'm facing another one!

The problem is that the maps don't load up correctly... Here's the ObjectType enumeration:

enum ObjectType<br />
{<br />
	// Empty tile<br />
	LX_EMPTY,<br />
<br />
	// Tiles for first layer<br />
	//L1_DESERT,	// Commented out because it's the default value (LX_EMPTY)s<br />
	L1_GRASS,<br />
<br />
	// Tiles for second layer<br />
	L2_ROCK,<br />
<br />
	// Tiles for third layer<br />
	L3_TELEPORTER,<br />
};

Here's some previous declarations needed to understand the troublesome methods:

<br />
#define WIDTH	512<br />
<br />
#define HEIGHT	384<br />
<br />
#define CHARW	32<br />
<br />
#define CHARH	32<br />
<br />
SDL_Surface ** mapLayerTiles;<br />
<br />
ObjectType mapLayers[3][WIDTH*HEIGHT];<br />
<br />
SDL_Surface * screen;<br />

Here's the method that loads the map layers:

void Mazzee::GetMapInfo(std::string map)<br />
{<br />
	// Map file streams<br />
	FILE * f[3] = {<br />
		fopen((map + ".ml1").c_str(), "rt"), <br />
		fopen((map + ".ml2").c_str(), "rt"), <br />
		fopen((map + ".ml3").c_str(), "rt")<br />
	};<br />
<br />
	//FILE * outputz = fopen("outputz.txt", "wt");<br />
<br />
	for (int x = 0; x < 3; x++)<br />
	{<br />
		if (f[x] == NULL)<br />
			exit(1);<br />
	}<br />
<br />
	// Get data for the layers<br />
<br />
	for (int x = 0; x < 3; x++)<br />
	{<br />
		int p = 0;<br />
		while (p < (WIDTH/32)*(HEIGHT/32))<br />
		{<br />
			//p = 0;	// Commented for debug purposes<br />
<br />
			// Exit if EOF was found<br />
			if (feof(f[x]))<br />
				return;<br />
<br />
			char v = fgetc(f[x]);<br />
<br />
			//fputc(v, outputz);<br />
<br />
			switch (v)<br />
			{<br />
				// Layer X (all)<br />
			case '.':<br />
				this->mapLayers[x][p] = LX_EMPTY;<br />
				++p;<br />
				break;<br />
<br />
				// Layer 1<br />
			case '|':<br />
				this->mapLayers[x][p] = L1_GRASS;<br />
				++p;<br />
				break;<br />
<br />
				// Layer 2<br />
			case 'o':<br />
				this->mapLayers[x][p] = L2_ROCK;<br />
				++p;<br />
				break;<br />
			<br />
				// Layer 3<br />
			case 'T':<br />
				this->mapLayers[x][p] = L3_TELEPORTER;<br />
				++p;<br />
				break;<br />
<br />
				/*// Newlines: Less p var by one<br />
			case '\r':<br />
			case '\n':<br />
				--p;<br />
				break;*/<br />
			}<br />
		}<br />
<br />
		//fclose(outputz);<br />
<br />
		// Close stream<br />
		fclose(f[x]);<br />
	}<br />
}

And here's the method that displays the map on the screen:

void Mazzee::DrawMap()<br />
{<br />
	// Fill with tiles<br />
	for (int x = 0; x < (WIDTH); x += CHARW)<br />
	{<br />
		for (int y = 0; y < (HEIGHT); y += CHARH)<br />
		{<br />
			for (int v = 0; v < 3; v++)<br />
			{<br />
				SDL_Rect src, dest;<br />
<br />
				if (v == 0)<br />
				{<br />
					if (this->mapLayers[v][(x/32)*(y/32)] == LX_EMPTY) src.x = 0;<br />
					else if (this->mapLayers[v][(x/32)*(y/32)] == L1_GRASS) src.x = 32;<br />
				}<br />
				else if (v == 1)<br />
				{<br />
					if (this->mapLayers[v][(x/32)*(y/32)] == LX_EMPTY) src.x = 0;<br />
					else if (this->mapLayers[v][(x/32)*(y/32)] == L2_ROCK) src.x = 32;<br />
				}<br />
				else if (v == 2)<br />
				{<br />
					if (this->mapLayers[v][(x/32)*(y/32)] == LX_EMPTY) src.x = 0;<br />
					else if (this->mapLayers[v][(x/32)*(y/32)] == L3_TELEPORTER) src.x = 32;<br />
				}<br />
<br />
				src.y = 0;<br />
				src.h = CHARH;<br />
				src.w = CHARW;<br />
<br />
				dest.x = x;<br />
				dest.y = y;<br />
				dest.h = CHARH;<br />
				dest.w = CHARW;<br />
<br />
				SDL_BlitSurface(this->mapLayerTiles[v], &src, this->screen, &dest);<br />
			}<br />
		}<br />
	}<br />
}

Here's the map files:

<br />
map1.ml1:<br />
...............<br />
...............<br />
...|...........<br />
...............<br />
...............<br />
...............<br />
...............<br />
.........|.....<br />
...|...........<br />
...............<br />
...............<br />
...............<br />
<br />
map1.ml2:<br />
o.............o<br />
...............<br />
...............<br />
...............<br />
..............<br />
...............<br />
...............<br />
...............<br />
...............<br />
...............<br />
...............<br />
o.............o<br />
<br />
map1.ml3:<br />
...............<br />
...............<br />
..T............<br />
...............<br />
...............<br />
...............<br />
...............<br />
...............<br />
...............<br />
...............<br />
............T..<br />
...............<br />

Sorry for making it long... Blush | :O

Thanks!

Lord Kixdemp
www.SulfurMidis.com
www.SulfurSoft.tk
[ftp://][http://][hotline://]tsfc.ath.cx

Problems with a trayicon popup menu

428828-Jan-06 3:51

4288

28-Jan-06 3:51

Hi all!

I used the Chris Maunder's Systray code to implement a systray with a popup menu, but i can't figure how to set a subitem checked!

I used the SetMenuItemChecked but it failed!!

I cant go on with this!! And i can't use Chris' classes with these stuffs too because they are for Mfc projects (mine is not mfc) !!

HELP ME PLEASE!!! Frown | :(

(

---

Re: Problems with a trayicon popup menu

Owner drawn29-Jan-06 18:06

Owner drawn

29-Jan-06 18:06

You need to handle UPDATE_COMMAND_UI for that particular menu item.

Jesus Loves Rose | [Rose]

<marquee direction="up" height="40" scrolldelay="1" step="1" scrollamount="1" style="background:#99ccff;border-bottom:thin solid 1px #6699cc">
--Owner Drawn Rose | [Rose]

--Defeat is temporary but surrender is permanent
--Jesus is Lord Rose | [Rose]

Re: Problems with a trayicon popup menu

428829-Jan-06 19:05

4288

29-Jan-06 19:05

You mean putting ON_UPDATE_COMMAND_UI as a switched case of the main dialog msg?

Like this?

case WM_INITDIALOG:
{
....
break;
}

case ON_UPDATE_COMMAND_UI:
{

//What to do here??

break;
}

---

Re: Problems with a trayicon popup menu

Owner drawn30-Jan-06 16:50

Owner drawn

30-Jan-06 16:50

Now I am confused. I don't know whether ON_UPDATE_COMMAND_UI exists in platform sdk.

But if you are able to solve please tell me.

Thanks Big Grin | :-D

Jesus Loves Rose | [Rose]

<marquee direction="up" height="40" scrolldelay="1" step="1" scrollamount="1" style="background:#99ccff;border-bottom:thin solid 1px #6699cc">
--Owner Drawn Rose | [Rose]

--Defeat is temporary but surrender is permanent
--Jesus is Lord Rose | [Rose]

MS DataGrid Control 6 - Find Selected Row & Read Cell Values

sdancer7528-Jan-06 3:07

sdancer75

28-Jan-06 3:07

Hi,

How can i find the selected row and read the cell values with mouse click event using the MS DataGrid v6 ActiveX Control ?

Regardsm

sdancer75

Number of Children in a Particular Node

kandukuri27-Jan-06 23:53

kandukuri

27-Jan-06 23:53

Hi all

Can any one post a sample source code for counting the number of children excluding the grand children in a particular node in a Tree

Lovekesh

Re: Number of Children in a Particular Node

Stephen Hewitt28-Jan-06 0:43

Stephen Hewitt

28-Jan-06 0:43

If I understand your question correctly you want to count the immediate children of a node. If this is the case code like this should do it:

UINT Count = 0;
HTREEITEM hItem = m_Tree.GetChildItem(hRootItem);
while (hItem != NULL)
{
  ++Count;
  HTREEITEM hNextItem = m_Tree.GetNextSiblingItem(hItem);
}

NOTE: I haven't actually tried this! Assumes you're using MFC (although it is easily adaptable if you're not).

Steve

Re: Number of Children in a Particular Node

kandukuri28-Jan-06 3:56

kandukuri

28-Jan-06 3:56

Hi steven

the above code is not working

the while loop is iterating continously and it is not at all terminating

can u suggest me why it is happening

-- modified at 9:57 Saturday 28th January, 2006

Re: Number of Children in a Particular Node

Stephen Hewitt28-Jan-06 18:06

Stephen Hewitt

28-Jan-06 18:06

Oops, it should look like this:

UINT Count = 0;
HTREEITEM hItem = m_Tree.GetChildItem(hRootItem);
while (hItem != NULL)
{
    ++Count;
    hItem = m_Tree.GetNextSiblingItem(hItem);
}

Steve

Re: Number of Children in a Particular Node

kandukuri28-Jan-06 22:01

kandukuri

28-Jan-06 22:01

Hi stephen

I ve written another code for my problem it works for me
but if i want to retreive the child including its children
and to retreive parent of a child
how the code willbe look like

-- modified at 4:13 Sunday 29th January, 2006

MDI Without menu

bantisk27-Jan-06 23:24

bantisk

27-Jan-06 23:24

I want a MDI app withOUT a menu, any menu.

With a SDI all I have to do is override PreCreateWindow() as follows:

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
cs.hMenu = NULL; // no menu
return CFrameWnd::PreCreateWindow(cs);

}

This will not work for MDI (vs. SDI). Any ideas?

Re: MDI Without menu

Joey Bloggs28-Jan-06 2:40

Joey Bloggs

28-Jan-06 2:40

In the app after mainframe creation

m_poMainFrame->SetMenu(NULL);

In a custom CMdiClient intercept and eat

ON_MESSAGE(WM_MDISETMENU , OnMDISetMenu )
ON_MESSAGE(WM_MDIREFRESHMENU, OnMDIRefreshMenu)

Re: MDI Without menu

bruspark9-Apr-06 23:28

bruspark

9-Apr-06 23:28

HI joey Bloggs!
thank you for your reply!
i add the SetMenu(NULL).it works!@thank you very much,
but still has problems..

I add the micros to the ChildFrame as you metioned manually(there isn't WM_MDISETMENU message in my class wizard of VC6)as follow:

in the childfrm.cpp:
BEGIN_MESSAGE_MAP(CChildFrame, CMDIChildWnd)
ON_MESSAGE(WM_MDISETMENU , OnMDISetMenu )
ON_MESSAGE(WM_MDIREFRESHMENU, OnMDIRefreshMenu)
END_MESSAGE_MAP()

and int the childfrm.h i add :
afx_msg void OnMDIRefreshMenu();
afx_msg void OnMDISetMenu();

but int the functions OnMDISetMenu() and OnMDIRefreshMenu(),it can't receive the message WM_MDISETMENU and WM_MDIREFRESHMENU!

could you explain it detailedly?
thanks a lot!

Re: MDI Without menu

Joey Bloggs10-Apr-06 19:49

Joey Bloggs

10-Apr-06 19:49

It's not ChildFrame it's MDIClient that you need to customise

class CMdiClient : public CWnd<br />
{<br />
.<br />
.<br />
.<br />
	afx_msg LRESULT OnMDIMaximize   (WPARAM wParam, LPARAM lParam);<br />
	afx_msg LRESULT OnMDIRestore    (WPARAM wParam, LPARAM lParam);<br />
	afx_msg LRESULT OnMDISetMenu    (WPARAM wParam, LPARAM lParam);<br />
	afx_msg LRESULT OnMDIRefreshMenu(WPARAM wParam, LPARAM lParam);<br />
}

Then make CMdiClient a member of MainFrame and subclass it in the create

///////////////////////////////////////////////////////////////////////////////<br />
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)<br />
{<br />
	if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1)<br />
	{	<br />
		return -1;<br />
	}<br />
	<br />
	if (!m_oMdiClient.SubclassWindow(m_hWndMDIClient))<br />
	{<br />
		MYTRACE(_T("Failed to subclass MDI client window\n"));<br />
		return -1;      // fail to create<br />
	}<br />

-- modified at 1:53 Tuesday 11th April, 2006

How to put IStream into IDataObject

saravana pandy27-Jan-06 23:19

saravana pandy

27-Jan-06 23:19

Hai,
I am struggling, not able to put IStream object into IDataObject.Here is the code snippet.I get error at set data line as Access Violation.Pls help me
LPDATAOBJECT pDO ;

FORMATETC fmtetc = {0};
fmtetc.cfFormat = CF_TEXT;
fmtetc.dwAspect = DVASPECT_CONTENT;
fmtetc.lindex = -1;
fmtetc.tymed = TYMED_ISTREAM;
fmtetc.ptd = NULL;

//STGMEDIUM definition
STGMEDIUM medium = {TYMED_ISTREAM,NULL,NULL};
medium.tymed = TYMED_ISTREAM;
medium.pstm->AddRef();

//error in this line during execution
pDO->SetData(&fmtetc,&medium,TRUE);

Saravana Kumar

Re: How to put IStream into IDataObject

Stephen Hewitt28-Jan-06 1:04

Stephen Hewitt

28-Jan-06 1:04

saravana pandy wrote:
STGMEDIUM medium = {TYMED_ISTREAM,NULL,NULL};
medium.tymed = TYMED_ISTREAM;
medium.pstm->AddRef();

Where is pstm set - It should be a pointer to a stream. I would think this code would crash when you call AddRef as you're calling it on a NULL pointer.

Steve

Re: How to put IStream into IDataObject

saravana pandy28-Jan-06 1:21

saravana pandy

28-Jan-06 1:21

Yes the progam crashes at that point.
How to set the pointer to the Stream.
If i give the pointer to the stream it throws error as
'initializing' : cannot convert from 'struct IStream' to 'struct HBITMAP__ *'
I just give like this:
LPSTREAM lpStream = NULL;
.
.//Write some data into stream
.
STGMEDIUM medium = {TYMED_ISTREAM,lpStream,NULL};
medium.pstm = lpStream;
Saravana Kumar

-- modified at 7:23 Saturday 28th January, 2006

Re: How to put IStream into IDataObject

Stephen Hewitt28-Jan-06 1:51

Stephen Hewitt

28-Jan-06 1:51

Here's how I'd do it:

STGMEDIUM medium;
medium.tymed = TYMED_ISTREAM;
medium.u.pstm = lpStream;
lpStream->AddRef();
medium.pUnkForRelease = NULL;

Steve

Re: How to put IStream into IDataObject

saravana pandy28-Jan-06 2:01

saravana pandy

28-Jan-06 2:01

Hai stephen,
Thanks for reply.
Wht is that medium.u.pstm?
I dnt get any thing called medium.u
Instead i set value as
medium.pstm = lpStream
lpStream->AddRef();
It gives me the same exception as access violation at

LPDATAOBJECT pDO;
FORMATETC fmtetc = {0};
fmtetc.cfFormat = CF_TEXT;
fmtetc.dwAspect = DVASPECT_CONTENT;
fmtetc.lindex = -1;
fmtetc.tymed = TYMED_ISTREAM;
fmtetc.ptd = NULL;
//Access violation exception 0xC0000005
pDO->SetData(&fmtetc,&medium,TRUE);
Can u please point out where i am going wrong?
Thanks for ur help.

Saravana Kumar

Re: How to put IStream into IDataObject

Stephen Hewitt28-Jan-06 2:19

Stephen Hewitt

28-Jan-06 2:19

Did you NULL out "pUnkForRelease" and set "tymed" like in the code below?

STGMEDIUM medium;<br />
medium.tymed = TYMED_ISTREAM;<br />
medium.pstm = lpStream;<br />
lpStream->AddRef();<br />
medium.pUnkForRelease = NULL;<br />

Steve

Re: How to put IStream into IDataObject

saravana pandy28-Jan-06 2:32

saravana pandy

28-Jan-06 2:32

Yes.Here is the code part using IDataObject:
LPDATAOBJECT pDO;
//FORMATETC definition
FORMATETC fmtetc = {0};
fmtetc.cfFormat = CF_TEXT;
fmtetc.dwAspect = DVASPECT_CONTENT;
fmtetc.lindex = -1;
fmtetc.tymed = TYMED_ISTREAM;
fmtetc.ptd = NULL;
//STGMEDIUM definition
STGMEDIUM medium ;
medium.tymed =TYMED_ISTREAM;
medium.pstm = lpStream;
lpStream->AddRef();
medium.pUnkForRelease = NULL;
pDO->SetData(&fmtetc,&medium,TRUE);
Is there any thing i have to add before setdata()?

Saravana Kumar

Re: How to put IStream into IDataObject

Stephen Hewitt28-Jan-06 18:05

Stephen Hewitt

28-Jan-06 18:05

I can't see anything obviously wrong here. Can you send the machine code around the instruction that is causing the crash and a stack trace?

Steve

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